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Laim .Parent No'. 82,311, dated ,september 22, 186s; mama 58mm, 8, ,868. 1

.IMPBQVEMNT IN assess.

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To ALL WHOMIT MAY CONCERN:

Be it-linown that'I, J oBN P. Heiss, of the city of Philadelphia, in the State of Pennsylvania, have invented` v a new and useful Improvement* in Ranges for cooking and viral-ming; and I do hereby declare that the fellow-` ing is a full, clear, axnigexact description of thepconstruction and operation of the same,^reference being had to the accompanying drawings, making apart of this speciiication, in.which- Figure 1 is a front elevation vot' the said improved range, the doors havingbeen removed. Figure 2, a view of the back or rear lof the same, as i'n connection with the brick-work, between the- Huss ther-eat. l Y- 3' Y Y Figure 3,' a plan view. of the upperfside of the same, without its top plate.r Figure 4, a central 'vertical section of same, above the dotted linen w of g. 3. -I Figui-e5, a central vertical transverse section ofthe saine, 'on-the left of the dotted line z y of iig. 3.' Figure 6, an enlarged top view oil-a sliding and removable portionlof the fuel-grate; and

Fignre7, a side view of a'draughtfspr'eadng'check-plate, 4near the outlet of the oven-heating flue, andl beneath the latter. l l v Like letters of reference indicate/the saio parts whenin the di-erent iigures.

The object of my improvement ier-to and location. of the br'ickilues in setting the range; the removal of -stones'and'cinders -or'elinlers from the incandescent'fnel in the fuel-cylinder, with- 'out putting out the re; and also,' to increase Athe general cooking, baking,'an'd air-warming functions ofV a range; and my invention consists in the peculiar `constructions andcombination's hereinafter set forth,

described, and speciied. l A v A Referring to the drawings, A is the fuel-cylinder B, a draught-chamber or'tunnel bommunicating y,therewith; C, the air-heating chamber; D," the vash-pit; E, the sliding removable portieri o f the fire-grate; F, an air-heating space -or chamber attached to one side of the'f'fel-cylinder A, and opening into the o ven G;

H, an air-deilecting annularfplate abovla the fuel-cylinder A'; I, the oven-heating draughtfiiue; J, an equalizing check-plate acrossl the oven draught-Hue I; K, a dead-Bue in rear ofthe -oven G; Ik, the escape-flue, from the 'bottom of the oven G; M, the fresh-air-supplying space; N N, the ribs, for.' guiding in the location and construction of the brick ilues; O, a continuation of the escapeue L from -thegbottom of thesoven'; P, the dust-flue from the 'ash-pit; Q, the direct flue from the fuel-chamber and R, the hot-air ilue,

The fuel-cylinder'A is of cast'iron,.and rests upon a horizontal plate c', .over the ash-pit D, and communicates therewith through the usual grate, and hse-a. flange around its upper edge, which iits in a recess in the V edge, formed by a corresponding opening in another horizontal plate, y1:,- the two plates, c andic", forming the top and bottom of the air-heating chamber C, aronnd'the fuel-cylinder A.V Around on the upper -side of the plate c", the air-defiecting annular plate H is x-ed so as to leave a thin, open space Vlietweenit and the 4fupper edge or ange of the fuel-cylinder A, for the pui-posev ofY allowing the fuel-cylinder A to expand upward, `and at the same timel allow a suiicient opening to remain for the passage of athin stratum of air from'chamber C into the open upper endof cylinder A, for the combustion of inilammable gases arising frm theincandesoent fuel,'(see gs. 3,4, and 5.)

The front p art of cylinder A-has an open tunnel projecting forward from its lower end, and forming the l vhot-air draught-.chamber B, its front end opening into the chamber' G, and through an opening, c",in theplate Vc', into the ash-pit D, (see figs. 4 and 5..) This chamber B is fitted witha detachable horizontally-sliding plate,

E, w-hcli is grated at its inner halt' by bars e?, and Ahas also a series of upright grate-bars, e, near itsmidlength, all constructed and arranged so that when'the plate is pushedintoits'seat in the tunnel br chamber B,

I the bars e willformpart of the bottom grate of the fuel-cylinder A,"ard the bars e" asmall upright gratein.

the front side of the same, or back' end of the tunnel or chamber B, (ses iigs. 3, -5, and`,) so that when this plate, E, is pulled forwardaud 'withdrawn,itwill leave an,y opening for the discharge ofcinders, clinkers, stones,

` Etc., from 'the fuel-cylinder A,'withont putting out thezre, whilst thesaid chamber', atalltinies,a'olrxleiv l plate of the said oven.4

ready access for prying np and loosening the fuel with a straight poker, and also the entrance of either hot or,cold air, orboth, into the cylinder A, assmay be desired. i

The air-heating chamber F forms a section of the fuel-cylinder A, and consists of a hollow cast-iron piece,

opening at its upper end directly into the oven G, and at its lower end into the hot-air chamber C, in whichit is placed, and also into the fresh-air-supplying space M below, so as to serve the piirpose of conducting a current of pure warm air into the oven for ventilating it; an opening, with a slide attached, being made at y' for its eventual escape into thellue I, (see g. 4.)

The check-plate J is a partition7 fixed across the due I, under the o'ven G, in the usual manner, but instead lof making it closed at its upper and lower sides, as heretofore, I cut away a wedge-shaped portion from its upper side, soas to leave a vgradually-increasing opening, 7","thereat, for the purpose of spreading the hotdraught air and gases more uniformly over the lower plate or bottom of thesaid oven, (seelgs. 1, 4, and 7.)

The draught-flue I, around the oven G, is widened off to one side, so as to produce a dead-flue, K, Icoextensive with the hack of the oven, (see fig-2,) for the purpose of more perfectly heating the whole back Thez ribs N N are cast on the back plate or plates of the range, -(see iig. 2,) for the purpose of guiding the bricklayer in locating and constructing the dues KO P Rin a more ready and unmistakable manner, and therefore facilitating the work of setting' the range, and enabling'an inexperienced bricklayer to set the range in a perfect manner without any diiculty in this alf-important point, in view of the proper operating of the range whenrinuse.

Itwill b e seen, as the open front end ofthe` tunnel B does not extend forwardfto the front plate of the range, but communicates openly -with .the air-heating `-chamber C- above, and also, through an adjustable opening, c", in the plat? c', with the ash-pit D below, that when the opposite outside door and the ash-pit d'oor, in the front plate cf tne range, are closed, and the usual hot-air escape registers,'in the rooms of the building, left open, -the heated air in the chamber c will be continually drawn through thesai'd tunnel B into the fuel-cylinder A, thus supporting the combustion of thefuel by heated airan economical result; and also preventing any of the air heated in the chamber C from entering` the said rooms-a very desirable and importantlytuseful result inhot weather.

It will also be seen that as the open mouth of the tunnel B is directly opposite to theoutside door in the frontA plate of the range, .free access can at any time be had to the tunn'e'l, for withdrawing the sliding grate E, loosening or agitating the fuel in the cylinder A, by a straight poker, withdrawing the cinders, and discharging the lattervand the accompanying ashes down into the ash-pit D with great facility, withoutca'using any of the same to fall outside of the front plate of the range; and these results are the objects sought for and obtained in a perfect vmanner by theppeculiar construction-and arrangement of theparts specified.

vIt will also be seen that the construction of the air-heating ilue F, and its arrangement in relation to the i fresh-air space M, the air-heating chamber C,.the fuel-cylinder A, and the oven G, as described, will ventilate the latter with fresh hot air, in a-more rapid and Aeiective manner than heretofore, without reducing the temperature of the oven; and the'dead-iiue K being made coextensivein height and breadth with th'e back plate of the oven G, as described, aids, in amore effective nianner, in heating the said oven than the narrow draughtue heretofore provided for the purpose, and is therefore f important utility, whilst the ribs N N afford facility and accuracy in setting the 'range never before aorded tothe builder of ranges, and are, therefore,'highly important and useful. l Y

Having thus fully described my improvement in ranges, what I claimas new therein, and desire to securev by Letters Patent, is confined to the following:

1. I claim the construction and arrangement'ofthe-tunnel B, iu its relation to the cylinder A and the air-heating chamber C, whereby the air for the combustion of the fuel in the cylinder can atnanystirnelbe drawn from the air-heating chamber C, substantially as and for the purposes described.

.2. The construction and arrangement, in` relation to each other, of the tunnel B, the detachable sliding grate E, and the adjustable opening c", in the plate c", into the ash-pit D, substantially as and for the purposes described. v A l 3. The construction and arrangement of the air-heating iiue F, in relation to the cylinder A, the aix'- heating chamber C, the cold-air space M, and 'the oven G, substantially as and for the purpose described.

. i JOHN P. HAYES.

Witnesses:

BENJ.' MoRIsoN, WM. H. MomsoN. 

